And here’s what everything does:
PUMP 1 (3 WAY CONTROL).
When “PUMP 1″ is in AUTO mode this engages “TEMP CONTROLLER 1″ WITH “HEAT 1″ AND “PUMP 1″. (The temp controller turns both the pump and the heat on/off depending on the temp)
When “PUMP 1″ is in OFF mode this only engages “TEMP CONTROLLER 1″(no “HEAT 1″ and no “PUMP 1″)
When “PUMP 1″ is in MANUAL mode this only engages the “TEMP CONTROLLER 1″ with “PUMP 1″ (no heat)

PUMP 2 (3 WAY CONTROL)
When “PUMP 2″ is in AUTO mode this engages “TEMP CONTROLLER 2″ WITH “HEAT 2″ AND “PUMP 2″. (The temp controller turns both the pump and the heat on/off depending on the temp)
When “PUMP 2″ is in OFF mode this only engages “TEMP CONTROLLER 1″ (no “HEAT 2″ and no “PUMP 2″)
When “PUMP 2″ is in MANUAL mode this only engages the “TEMP CONTROLLER 2″ with “PUMP 2″ (no heat)